Mounting of aerial propellers.



R.J1sAAcsoN. MOUNTING 0F AERIAL PROPBLLERS. APPLICATION FILED DBG; 1,81' 1911.

1,027,252.` Patented May 21, 1912.

2 SHEETS-SHEET 1.

'l any A R. J. sAAcsoN. MOUNTING 0F AERIAL PROPBLLERS.

APPLICATION FILED DEG. 16, 1911.

Patentedmay 21, 1912.

2 SHEETS-E HEBT 2.'

UNITED AWENT onirica. i

RUPERT yJOHN IsAAosoN, .0E LEEDS, ENGLAND.

MopN'rING or AERIAL' rEorELLEnsR Specication of Letters Patent. y Patented lusty 2.1,'19121 Application led December 16, 1911. SerialNo. 66652672.. i

To all whom it. may concern: i

' Efi-Be it kno. n that I, vRUPERT J oHN ISAAC! son; a1 subject ofthe King of Great Britain Y and Ireland, residing at Leeds, in the county `of York, England, have invented Improve- .ment-s in theMountingof v A'.erial"Propellers, of which the following, is Aaf specification.V

This invention has for'objectto provide an improved arrangement of mounting the aerialpropellers of flying machines.A

. iAccording to the'invention the crank casing of the motorfthatdrives the propeller is provided with a; 'fixed tubular carrier that projects outwardly and -on which the propeller bush andthe driving wheel thereforl vare mounted to rotate.

End thrust ofthe propeller may be taken byA a suit-able thrust lbearingwhich may; for example be of the ball type.

To .facilitate easy. running the said car- 4rier is fitted with ball bearings for the propeller boss 'and toothed wheel secured thereto. Thrust bearings, which may be of the ballw type, are adapted to prevent endwise movement of the propellerbush` on the caraoy rier in both directions and conveniently these bearings worky in conjunction with an inwardly extending thrust "flange on the propeller-bush'.-l f

The rotary bearings as well as the thrustbearings areloc'ated in an "annular space formed vbetween the tubular carriergand the ,driving wheel boss4 and propeller bush,and

a cap is provided for closing the end of this A space, to retain lubricant in the bearings.

Figure l of the :accompanyingillustrative y drawings, is a sectional elevation of .adriving motor showing-the fixed tubular `carrier and its flange secured to -one end ofthe crank casing, according tothis invention. Fig. 2j is anend View of the fixed tubular lcarrier and' flange. Ilig. 3 isga sectional elevation of the tubular carrier showing a propeller bush, and the cylindrical boss of the` driving wheel, mounted to revolve on ball bearings around the said carrier, and also showing means forv preventing endwisemovement of the ropeller bushbn the tubuor taking ythe end thrust of thejpropeller while revolving. Fig. 4- is an elevation of the tubular carrier and its flange.

ITo the end a of the motor casing is sei cured the flange c `of the tubular carrierv which extends outwardly concentric with l byv rivets 13.v

formed*L through it to allow the Vgear wheels 7c to mesh 4with the said driving wheel h.

On th outer periphery of the tubular carrier, near its outerend Z on a part m of reduced diameter, and on a part n of enlarged diameter somedi'stance from-the part m, are arranged innerba'll. bearing guides or races 0 and p for thel ball bearings 'l' and Ls. The outerguides or races t and a for such ball bearingsA secured at 'corre.

spending distances apart; the ideor race :t -within the end fu' ofthe cyl1ndrical propeller bush 'w and the guide or krace u within the-projecting tubular boss'y ofthe driving wheel e. As will beseen the `propeller bush w and driving wheel e freely revolves'on the ball: bearings 1- and s. 4

The end 3 ofthe propeller bush fw is provided with a fixed flange 4f, while'its other the end e of the crarikgshaft f. The p art g i driving wheel ./L secured on the end e of the crank shaft, appropriate orifices c' b eing end ais! fitted with a suitable loose flange 5,

Within the bush is an inwardly extending thrust flange 6 having parallel sides.

' The outer end- 9 of the flange 4 is recessed at 10 t0` receive the end 11 of an inwardly vprojecting' flange` 12 of the driving .wheel boss y which is secured to the propeller bush Between the flange '12 and the other'` or y toothed end of the bossg/such boss is formed lwith an 'inwardly extending flange 16 against which the race orguide u abuts.

For the Apurpose of preventing aendwise movement ofthe bush zo ineither direction,

the tubular carrier is provided with'thrust l ball bearings/18 and 19 ladapted to coact with run on vraces or' ways formed in plates, or

rings 20, 22, 23- and 26 threaded on the tubu` lar carrier. The inner plate 2O bears against flange 6.v The balls of these bearings a shoulder 21 formed therefor on the carrier and the outer platec26 is backed by a washer '24 vthat is maintained -in place by the adjacent guideor race o A nut 28 working on the screw threaded outer portion of the tubular carrier presses the washer 24,

through the guide or race'o, up against ak shoulder 27 on the` carrier tube.

Screwed onto the outerl end Zfof the tubular carrier is a cap 30y which closes the and mounte'd'to rotate on said carrier.

` motor, a tubular carrier fixed to said casing,

Vn 1otor,.a tubular carrier fixed to said casing,

said space..4

annular space 3l between the carrier and the bush lw, the end 34C of such cap 30 bearing against the end of the bush to retain the lubricant in all the ball bearings within the annular space 3l.

The lubricating oil pipe and the high tent sion wires, Bowden wire for,controlliufsr H19 throttle lever' on carbureter, and petrol pipe. may pass through the tubular carrier.`

lVhat I claim is l. A motor-'.1 a crank easing for said motor, a tubular carrier fixed to said casing. and an aeriai'propeller driven by said motor Q. A motor, a crank casing for said motorv` a tulnllar carrier fixed to said casing concentric with the crank shaft of said motor, and an aerial propeller driven by said motor and mounted to rotate on said carrier.

3. A motor, a crank casing for' said motor, a tubular carrier fixed to said casing, an aerial propeller driven by said motor and mounted to rotate on said carrier, and means yfor taking end thrust of said propeller.

4f. A motor, a crank casing for said motor, a tubular carrier fixed to said casing, an aerial propeller driven by said motor and mounted on said carrier and rotary bearings o n said carrier surrounded by the hub of said propeller. i

5. A motor, a crank casing for said an aerial propeller driven by said motor and the hub of which surrounds the said carrier, bearings for said propeller arranged in the space between the said carrier and the hub ofV said propeller, and means for closing l the outer end of the said space.

6. A motor, a crank casing for said an aerial propeller driven by said motor and` the hub o'f which surrounds the said carrier, bearings forv said propeller arranged in the annular space between the said. carrierI and the hub of the said propeller, and means for closing the outer end of the said annular space.

7. A motor, a crank casing for said motor, a tubular carrier fixed to said casing, an aerial propeller driven by said. motor and the hub of which surrounds the said carrier, rotary and thrust bearingsfor saidpropeller arranged in the space between the said carrier and the hub of said propeller, and means for closing the outer endfof the 8. In combination, a motorfa crank shaft driven by said motor, a crank casing, a tubular Carr-ier formed with sideopenings fixed to said casing concentric with said crank shaft, a toothed driving wheel on said shaft located within said carrier, toothed driven pinions each projecting through a side opening of said carrier and gearing into said toothed wheel, short shafts on which said pinions are fixed, driving pinions fixed on said short shafts, a

vdriven wheel embracing said carrier and engaged by said driving pinions, a propeller hub embracing said ca rier and fixed to said driven wheel, an for said driven wheel and said hub mounted on said carrier.

9. In combination, a motor, a crank shaft driven by said motor, a crank casing, a tubular carrier formed with side openings fixed to said casing concentric withv said crank shaft, a toothed driving wheel onsaid shaft located within said carrier, toothed driven pinions each projecting through a side opening of said carrier and gearing into said toothed wheel, short shafts on which said pinions are fixed, driving pinions fixed on said short shafts, a driven wheel embrac ingsaid carrier and engaged by said driving pinions, a propeller hub embracing said carrier and fixed to said driven wheel, rotary bearings for said driven wheel and said 'hub mounted on said carrier, and a thrust bearing for said hub. y

10. In combination, a;motor, a crank shaft driven by said motor, a crank casing, a tubular carrier formed with side openings fixed to said casing concentric withsaid crank shaft, a toothed 'driving wheel .on said shaft located within said carrier, toothed driven, pinions each projecting through a side Aopening of said carrier and gearing into said toothed wheel, short shafts on which said pinions arelfixed, driving pinions fixed onsaid short Yshafts, a driven wheel embracing said carrier and engaged by said driving pinions, a propeller hub embracing said carrier and fixed to said driven wheel, ball bearings located in the space between said ldriven wheel and said carrier, ball bearings located in the space between said hub and carrier, and means for closing the outer end of the space between said hub and said carrier.

11. In combination, a motor, a crank shaft driven by said motor, a 'crank casing, a tubular carrier formed'with side openings fixed tofsaidcasing 'concentric with said crank shaft, a tbothed driving wheel on said shaft located within .said carrier, toothed driven pinions .each projecting 44through a side opening ofsaid carrier and gearing into said. toothed wheel, short shafts on which said pinions are fixed driving pinions fixed lon said short shafts, adriven wheel4 embracing said carrier and engaged by said driving pinions, a propeller hub embracing sid carrier and fixed to said driven wheel, ball bearings lo'cated in the space between said driven wheel and said carrier7 ball bearings located in the space between said hub and said carrier, a fiange within vrotary bearings A, tubular carrier said projecting ranged on` said carrier' at each. side ,of'said anga fr, l2.-In combination, 'a motora' crank shaft driven by said motor, a, crankcasng, formedwith v side openn fixed to said casing concex'tric` with said crank shaft, atoothed drivin'gwhee1 on said shaftl located within said carrier,

toothed driven plnlons.v each projecting throughaJ sldeopening of saidgcarrierand ygearing-into said toothed wheel, short shafts "on which said pinions are fixed', driving wheel embracing said vcarrierfcnd,engaged I pinions xed on said short shafts,fa driven by said driving pinions, a. propel-1er hub eintowerd said cai'rrier andfball bearingsfor taking end thrust arbrcing-sid carrier fixed' to-saiddriven wheel, ballnbearngs located inthe Spacev between saidfdriver ball vbearings located said' 'fb Vand carrier, hub' projecting toward said carrier,

wheel and, *seid carrier, inthe space. between a.' flange within said lball lbearings for taking end thrust arranged 'on said carrier at each sideo said a-nge and a cap xed .on said carrier. adapted to close eighth -dayof November 1911.I 

